Tech@ZWO The Left is the image taken by Canon, and the right image was taken by ASI2600MC Pro.
cc @lmclouth
You do realize that the bright star from the Canon camera that you are pointing to is a double star, right?
The Dawes Limit is what caused the double to appear as a slightly elongated star. But anyone who is used to looking through an eyepiece of a good telescope will right away recognize it as a unresolved double star. It does not have a diffraction pattern that looks anywhere like the one from the ASI2600. It looks like a perfectly formed double star with the primary that is somewhat brighter than its double.
Here is the astrometry.net plate solve of that region of the Canon plate:
The star in question is the brightest star in between NGC7332 and the star HD214398, with the star forming a 4-star asterism with its nearby neighbors, in the shape of a trident, with our "bright" star at the apex of the trident.
That star shows up as a double star in SkySafari, as shown below here (see the bright star below HD214398 that is at the apex of our familiar trident asterism):
There is nothing wrong with his telescope. In fact, it is so perfectly collimated that it pretty much almost resolved that double star! Congrats Lamar, the scope is a keeper; and you have darn good focus, too -- Tri-Bahtinov masks are a godsend, no?
IMHO, the ZWO poster owes Lamar an apology, and retract the "conclusion."
Chen
